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Post Info TOPIC: Comet 174P/Echeclus


L

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60558 Echeclus
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The large, diffuse breakaway object is centred at the 2 o'clock position relative to the nucleus of 60558 Echeclus.
Image: University of Oklahoma

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L

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RE: Comet 174P/Echeclus
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Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2006 04 05 13 09.01 -05 13.7 11.901 12.899 176.5 0.3 20.5
2006 04 10 13 07.83 -05 06.0 11.890 12.891 177.0 0.2 20.5
2006 04 15 13 06.65 -04 58.4 11.887 12.881 172.2 0.6 20.5
2006 04 20 13 05.49 -04 51.0 11.891 12.872 167.1 1.0 20.6
2006 04 25 13 04.36 -04 43.8 11.903 12.863 162.0 1.4 20.6
2006 04 30 13 03.27 -04 36.9 11.922 12.854 156.8 1.8 20.6


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L

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Astronomers have found a `complex structure` around coma of Centaur 60558 (it was first reported by Choi and Weissman in late 2005, and originally classified as a Centaur) . The object is now known as comet 174P/Echeclus.
It was imaged using the 1.8 meter Vatican Advanced Technology Telescope on Mt Graham, Arizona.

The highest surface brightness condensation in the extended structure is clearly separated from the nucleus, which may suggest a transient impact event on the nucleus. The extended object can be traced for over 2 arcmin in diameter.
Currently, the object is almost 13 AU from the Sun. The nucleus has an R magnitude of 20.1. The entire extended structure has an R mag of about 16. The higher surface brightness condensation to the west has an R magnitude of about 18.

The Astronomers had imaged the object in 2004 and found no coma.

http://observatory.ou.edu/

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